What to do when can't find Microsoft SQL Server error explanation

Following this doc View or Change the Default Locations for Data and Log Files for SQL Server 2016. I am attempting a simple change of location for data/log/backup files in MSSM. - Connect in Object Explorer - Login to localdb - Right-click on localdb instance and choose Properties - Choose Database Settings - Attempt to change file paths (single/multiple instances) to a subfolder (with rights) of default folder Logged into database using Windows Authentication using the following credentials: - (localdb)\MSSQLLocalDB - Laptop\user I am using the following version of Microsoft SQL Server Management SQL (Have tried this both in standard/(Administrator) modes) Server Management Studio 15.0.18424.0 SQL Server Management Objects (SMO) 16.100.47021.0+7eef34a564af48c5b0cf0d617a65fd77f06c3eb1 Microsoft Analysis Services Client Tools 15.0.19750.0 Microsoft Data Access Components (MDAC) 10.0.19041.2604 Microsoft MSXML 3.0 6.0 Microsoft .NET Framework 4.0.30319.42000 Operating System 10.0.19044 Error message from here: =================================== Alter failed for Settings 'Microsoft.SqlServer.Management.Smo.ObjectKeyBase'. (Microsoft.SqlServer.Smo) ------------------------------ For help, click: https://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=16.100.47021.0&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Alter+Settings&LinkId=20476 ------------------------------ Program Location: at Microsoft.SqlServer.Management.Smo.SqlSmoObject.AlterImpl() at Microsoft.SqlServer.Management.SqlManagerUI.ServerPropDBSettings.SendDataToServer() at Microsoft.SqlServer.Management.SqlManagerUI.ServerPropDBSettings.OnRunNow(Object sender) at Microsoft.SqlServer.Management.SqlMgmt.PanelExecutionHandler.Run(RunType runType, Object sender) at Microsoft.SqlServer.Management.SqlMgmt.SqlMgmtTreeViewControl.DoPreProcessExecutionAndRunViews(RunType runType) at Microsoft.SqlServer.Management.SqlMgmt.SqlMgmtTreeViewControl.ExecuteForSql(PreProcessExecutionInfo executionInfo, ExecutionMode& executionResult) at Microsoft.SqlServer.Management.SqlMgmt.SqlMgmtTreeViewControl.Microsoft.SqlServer.Management.SqlMgmt.IExecutionAwareSqlControlCollection.PreProcessExecution(PreProcessExecutionInfo executionInfo, ExecutionMode& executionResult) at Microsoft.SqlServer.Management.SqlMgmt.ViewSwitcherControlsManager.RunNow(RunType runType, Object sender) =================================== An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo) ------------------------------ Program Location: at Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery(String sqlCommand, ExecutionTypes executionType, Boolean retry) at Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery(StringCollection sqlCommands, ExecutionTypes executionType, Boolean retry) at Microsoft.SqlServer.Management.Smo.ExecutionManager.ExecuteNonQuery(StringCollection queries, Boolean retry) at Microsoft.SqlServer.Management.Smo.SqlSmoObject.ExecuteNonQuery(StringCollection queries, Boolean includeDbContext, Boolean executeForAlter) at Microsoft.SqlServer.Management.Smo.SqlSmoObject.AlterImplFinish(StringCollection alterQuery, ScriptingPreferences sp) at Microsoft.SqlServer.Management.Smo.SqlSmoObject.AlterImplWorker() at Microsoft.SqlServer.Management.Smo.SqlSmoObject.AlterImpl() =================================== RegCreateKeyEx() returned error 5, 'Access is denied.' (.Net SqlClient Data Provider) ------------------------------ For help, click: https://docs.microsoft.com/sql/relational-databases/errors-events/mssqlserver-22002-database-engine-error ------------------------------ Server Name: (localdb)\MSSQLLocalDB Error Number: 22002 Severity: 16 State: 1 ------------------------------ Program Location: at Microsoft.SqlServer.Management.Common.ConnectionManager.ExecuteTSql(ExecuteTSqlAction action, Object execObject, DataSet fillDataSet, Boolean catchException) at Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery(String sqlCommand, ExecutionTypes executionType, Boolean retry) Results from error message help suggestions - first "For help" link leads to advertising - second database errors results in 404 error - follow links of 404 page to database errors listed by number - using quoted error number Error Number: 22002 for SQL Server 2016 I find there isn't one? Even using the provided script for doc Database Engine events and errors (22000 to 22999) does not produce an explanation for Error Number: 22002 Does anyone have an idea for what more I could do? Any would be appreciated.